A gerundive is an adjective formed from a verb (ending in -ndus, -nda, -ndum) that modifies a noun and agrees with it in gender, number, and case, as in ad eas res conficiendas, "for preparing these things." On AP Latin, you identify it in Pliny and Vergil and translate it idiomatically.
A gerundive is an adjective built from a verb. It takes the -nd- stem (like the gerund) plus regular first/second declension adjective endings (-ndus, -nda, -ndum), and it agrees with a noun in gender, number, and case. The CED's own example is ad eas res conficiendas, literally "for these things to-be-prepared," which you'd actually translate as "for preparing these things." That gap between the literal version and the smooth English version is exactly what the exam cares about.
The gerundive carries a passive, often "needing to be done" flavor. When it pairs with a form of sum, it becomes the passive periphrastic, expressing obligation or necessity ("must be ___ed"). The most famous example is Cato's Carthago delenda est, "Carthage must be destroyed." You'll meet gerundives in both required prose and poetry, so being able to spot one mid-sentence and unpack it into idiomatic English is a skill you use across the whole course.
The gerundive shows up in the essential knowledge for two required readings. In Unit 2, learning objective AP Latin 2.2.A asks you to describe how verbs and verbals function in Pliny's eruption letter (6.16.13-22), and the gerund/gerundive distinction is named explicitly. In Unit 5, AP Latin 5.1.D does the same for Vergil's Aeneid Book 4. In both places, identifying the gerundive feeds directly into the translation objectives (2.2.C and 5.1.F), because a literal word-for-word rendering of a gerundive sounds awful in English. "For these things to-be-prepared" has to become "for preparing these things." The exam rewards you for making that move cleanly. Since the gerundive appears in both the prose and poetry halves of the syllabus, it's one of those grammar points that pays off everywhere.
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Gerund (Units 2 & 5)
The gerund and gerundive are siblings. Both use the -nd- stem, but the gerund is a verbal NOUN (bellandi, "of waging war") while the gerundive is a verbal ADJECTIVE that must agree with a noun. The CED introduces them side by side in 2.2.A and 5.1.D, and the exam loves asking you to tell them apart.
Carthago delenda est (Units 2 & 5 grammar in action)
Cato's famous line is the gerundive plus a form of sum, the passive periphrastic. Delenda agrees with Carthago and est turns it into obligation, "Carthage must be destroyed." If you can parse this sentence, you understand the gerundive's most common job.
Accusative (all units)
Gerundives often live inside ad + accusative purpose phrases, like ad eas res conficiendas. The whole phrase means "for the purpose of preparing these things," so case knowledge and gerundive knowledge work together to unlock the translation.
Ablative Absolute (Unit 2)
Like the gerundive, the ablative absolute is a participle-style construction where a verbal form agrees with a noun and the literal translation sounds clunky in English. Both test the same core skill, recognizing a verbal-plus-noun unit and rephrasing it idiomatically.
The gerundive is tested as a grammar-identification and translation skill, not as a vocabulary term. Multiple-choice questions hand you a sentence and ask what a -nd- form is doing. For example, practice questions repeatedly ask how vitandum functions in a sentence, and the trap answers are usually "gerund" when it's a gerundive (or vice versa). Check whether the form agrees with a noun. If it does, it's a gerundive. On the translation FRQs, you're graded on idiomatic English under objectives like 2.2.C and 5.1.F, so a phrase like ad eas res conficiendas needs to come out as "for preparing these things," not "toward these things about-to-be-completed." If the gerundive sits next to a form of sum, translate it as obligation ("must be," "has to be").
The gerund is a verbal NOUN; the gerundive is a verbal ADJECTIVE. They share the -nd- stem, which is why everyone mixes them up. The test is agreement. A gerund stands alone as a noun (bellandi, "of waging war"), while a gerundive modifies a noun and matches it in gender, number, and case (eas res conficiendas, where conficiendas agrees with the feminine plural accusative res). Quick check on the exam: if the -nd- word has a noun it agrees with, it's a gerundive. If it's acting as a noun by itself, it's a gerund.
A gerundive is an adjective formed from a verb, ending in -ndus, -nda, -ndum, and it agrees with a noun in gender, number, and case.
The fastest way to tell a gerundive from a gerund is agreement: a gerundive modifies a noun, while a gerund is itself a noun.
Translate gerundive phrases idiomatically, so ad eas res conficiendas becomes "for preparing these things," not a literal word-for-word rendering.
A gerundive plus a form of sum is the passive periphrastic and expresses obligation, as in Carthago delenda est, "Carthage must be destroyed."
The gerundive appears in the essential knowledge for both Pliny's Vesuvius letter (Topic 2.2) and Vergil's Aeneid Book 4 (Topic 5.1), so it's tested in prose and poetry alike.
A gerundive is a verbal adjective ending in -ndus, -nda, -ndum that modifies a noun and agrees with it in gender, number, and case. The AP CED example is ad eas res conficiendas, "for preparing these things."
A gerund is a verbal noun (bellandi, "of waging war") and stands alone. A gerundive is a verbal adjective and must agree with a noun, like conficiendas agreeing with res. If the -nd- word has a noun partner it matches, it's a gerundive.
Yes, the gerundive is passive in sense, often with a "to be done" or "must be done" flavor. That's why English translations need rephrasing. "These things to-be-prepared" becomes "preparing these things."
Translate the whole phrase idiomatically, not word by word. In ad + accusative phrases, use "for ___ing" (ad eas res conficiendas, "for preparing these things"). With a form of sum, use obligation, as in Carthago delenda est, "Carthage must be destroyed."
Yes. It's named in the essential knowledge for learning objectives AP Latin 2.2.A (Pliny 6.16.13-22) and AP Latin 5.1.D (Aeneid Book 4), and multiple-choice questions ask you to identify the grammatical function of forms like vitandum.